#!/usr/bin/env node

import fs from 'fs';
import path from 'path';
import { execSync } from 'child_process';
import { fileURLToPath } from 'url';

const EXCLUDE = [
  '.git',
  'node_modules',
  '.next',
  '.sisyphus',
  'pnpm-lock.yaml',
  'bin',
];

function copyRecursive(src, dest, replacements) {
  const stat = fs.statSync(src);
  if (stat.isDirectory()) {
    if (EXCLUDE.includes(path.basename(src))) return;
    fs.mkdirSync(dest, { recursive: true });
    for (const entry of fs.readdirSync(src)) {
      copyRecursive(path.join(src, entry), path.join(dest, entry), replacements);
    }
  } else {
    let content = fs.readFileSync(src, 'utf-8');
    for (const [key, value] of Object.entries(replacements)) {
      content = content.split(key).join(value);
    }
    fs.writeFileSync(dest, content);
  }
}

function main() {
  const projectName = process.argv[2];

  if (!projectName) {
    console.error('Usage: node bin/init-template.js <project-name>');
    process.exit(1);
  }

  const targetDir = path.resolve(process.cwd(), projectName);

  if (fs.existsSync(targetDir)) {
    console.error(`Directory already exists: ${targetDir}`);
    process.exit(1);
  }

  const __dirname = path.dirname(fileURLToPath(import.meta.url));
  const templateDir = path.resolve(__dirname, '..');

  const replacements = {
    'convex-next-saas': projectName,
    'https://convex-backend.mentat.ovh': 'https://your-convex-backend.example.com',
    'https://backend-site-olnjg91x5ervt6j6owwgnlha.mentat.ovh': 'https://your-convex-site.example.com',
    'self-hosted-convex|01eea0ecf04bed0f70b73021564229f7f08eecff003f7294e5f9279faa4c19ffd5c501b0ac': 'self-hosted-convex|YOUR_ADMIN_KEY',
    'http://localhost:3000': 'http://localhost:3000',
    'SaaS Template': projectName,
    'Create SaaS in a day!': `${projectName} — built with convex-next-saas`,
  };

  console.log(`Creating ${projectName}...`);
  copyRecursive(templateDir, targetDir, replacements);

  execSync('git init', { cwd: targetDir, stdio: 'inherit' });

  console.log('Installing dependencies...');
  execSync('pnpm install', { cwd: targetDir, stdio: 'inherit' });

  console.log(`\nDone! cd ${projectName} && pnpm dev --webpack`);
}

main();